Module 2 Atomic Structure Flashcards
A molecule is formed when:
A) A proton loses its charge.
B) Two atoms split apart.
C) An electron becomes more positive.
D) Two atoms join together.
D) Two atoms join together.
Which of these materials are conductors?
Gold, Copper, Silver
What are semiconductors?
A) Materials that allow electrons to flow easily.
B) Materials that resist the flow of electrons.
C) Materials with four valence electrons.
D) Materials that are easily malleable.
C) Materials with four valence electrons.
The Atomic Theory of Matter states that:
A) Protons are neutrons are matter, but electrons are not.
B) Protons are electrons are matter, but neutrons are not.
C) All matter is composed of atoms.
D) What matters is the nucleus of an atom.
C) All matter is composed of atoms.
The number of protons in an atom is always equal to the number of neutrons.
True or False
False
French Scientist Charles DuFay proposed the concept of positive and negative charges. Like charges tend to ________ each other while unlike charges tend to ________ each other.
A) Attract; Repel
B) Repel; Attract
C) Interfere with; Enhance
D) Bond with; Destroy
B) Repel; Attract
This part of an atom is always positively charged.
Protons
Both salt and water are examples of:
A) Compounds
B) Atoms
C) Condiments
D) Elements
A) Compounds
The Nucleus of an atom contains:?
Electrons
Encephalons
Muons
Quarks
Protons
Neutrons
Gluons
Protons, Neutrons
Elements with similar electron orbital structures will probability have similarities in the way they behave.
True or False?
True
The shell(s) of an atom contain:?
Electrons
Quarks
Protons
Muons
Encephalons
Gluons
Neutrons
Electrons
This part of an atom is always negatively charged. Select all that apply.
Muons
Neutrons
Encephalons
Gluons
Protons
Electrons
Quarks
Electrons
The atomic number of an element is equal to:
A) The number of protons plus the number of neutrons.
B) The number of protons plus neutrons plus electrons.
C) The number of electrons plus the number of neutrons.
D) The number of protons
D) The number of protons
What is a valence electron?
A) An electron in the middle shell of an atom.
B) An electron in the inner shell of an atom.
C) An electron with an elliptical rather than circular orbit.
D) An electron in the outer shell of an atom.
D) An electron in the outer shell of an atom.
According to the Law of Electrical Charges, electrons and protons attract each other.
True or False
True
The atomic weight of an element is equal to:
A) The number of protons plus the number of neutrons.
B) The number of protons plus neutrons plus electrons.
C) The number of electrons plus the number of neutrons.
D) The number of protons plus the number of electrons.
A) The number of protons plus the number of neutrons.
Chemical processes are routinely used to divide elements into simpler substances.
True or False
False
What are insulators?
A) Materials with four valence electrons.
B) Materials that are easily malleable.
C) Materials that resist the flow of electrons.
D) Materials that allow electrons to flow easily.
C) Materials that resist the flow of electrons.
What are conductors?
A) Materials with four valence electrons.
B) Materials that are easily malleable.
C) Materials that resist the flow of electrons
D) Materials that allow electrons to flow easily.
D) Materials that allow electrons to flow easily.
A molecule is formed when:
A) Two atoms join together
B) A proton loses its charge
C) An electron becomes more positive
D)Two atoms split apart
A) Two atoms join together
What happens when an electron arrives at an atom?
A) A new element is formed.
B) Negative ions are formed.
C) Neutral ions are formed.
D) Positive ions are formed.
B) Negative ions are formed.
The nucleus of an atom carries this charge:?
A) Negative
B) Nucleic
C) Positive
D) Neutral
C) Positive
The flow of current in a conductor can accurately be explained by electrons moving from one atom to the next.
True or False
True
Which of these materials are semiconductors? Select all that apply.
Silicon
Gold
Rubber
Wood
Copper
Glass
Plastic
Silver
Germanium
Silicon, Germanium
What are the basic parts of an atom? Select all that apply.
Protons
Gluons
Neutrons
Encephalons
Quarks
Muons
Electrons
Protons, Neutrons, Electrons
The chemical properties of all the elements are defined by how their atoms’ shells are occupied with electrons.
True or False
True
The electrons in the outer orbits of an atom can be more easily knocked off and transferred to a neighboring atom.
True or False
True
The first second and third shells of an atom can hold this number of electrons, respectively:
A) 2, 6, and 18
B) 1, 4, and 9
C) 2, 8, and 18
D) 1, 5, and 15
C) 2, 8, and 18
Elements of different atoms can combine to form:
A) Duolites
B) Compounds
C) Constituents
D) Doublets
B) Compounds
What happens when an electron leaves an atom?
A) A new element is formed.
B) Positive ions are formed.
C) Negative ions are formed.
D) Neutral ions are formed
B) Positive ions are formed.
What is it called when there are the same number of protons and electrons?
A) Positive ion
B) Neutral ion
C) Negative ion
D) Strange ion
B) Neutral ion
Which of these materials are insulators? Select all that apply.
Glass
Germanium
Silver
Gold
Wood
Plastic
Silicon
Rubber
Copper
Glass, Wood, Plastic, Rubber
